64715279 has 8 divisors (see below), whose sum is σ = 66076560. Its totient is φ = 63359296.

The previous prime is 64715267. The next prime is 64715281. The reversal of 64715279 is 97251746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64715279 - 2²⁴ = 47938063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64715219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31712 + ... + 33690.

It is an arithmetic number, because the mean of its divisors is an integer number (8259570).

Almost surely, 2^64715279 is an apocalyptic number.

64715279 is a deficient number, since it is larger than the sum of its proper divisors (1361281).

64715279 is a wasteful number, since it uses less digits than its factorization.

64715279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2649.

The product of its digits is 105840, while the sum is 41.

The square root of 64715279 is about 8044.5807224491. The cubic root of 64715279 is about 401.4846473216.

The spelling of 64715279 in words is "sixty-four million, seven hundred fifteen thousand, two hundred seventy-nine".